Built-in Bluetooth + microphone 2USB, fast charging USB Supports hands-free calling. Supports advanced audio transmission mode. Supports clock indication when power is off. Model:SX-5513 Storage capacity:No memory FM function:Yes (87.5-108mhz) PC interface type:Bluetooth Audio source:Car integrated MP3 player High quality digital stereo FM radio Supports tri-band radio shop FM1-FM2-FM3 with 18 preset stations. (: 87.5-108MHz) Support USB / TF card reader Supports audio:MP3 / WMA / WAV formats etc. Support folder playback function Supports remote control. Rotating electronic volume control MP3 playback supports pause / preview / repeat / random play and 10 track up / down selection Electronic bass / treble / left/right balance / front/back balance volume control Front AUX audio input hole and rear terminal L / R audio output hole. 4-track high power output (4 high power speakers) Input voltage:DC 12V Output power:4*60W Frequency range:87.5MHZ-108.0MHZ Maximum current consumption:15A Fitment:For Car Colour:Black Material:plastic+Metal Package Contents: 1 set * Wireless Bluetooth Radio 1 * English instruction manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.